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Scopus, Google Scholar, Web of knowledge : Too much or not too much? ICOLC Autumn 2005 7th European Meeting - Poznan, Po

Scopus, Google Scholar, Web of knowledge : Too much or not too much? ICOLC Autumn 2005 7th European Meeting - Poznan, Poland. Ezio Tarantino Con la collaborazione con Mary Joan Crowley BIDS – Biblioteca digitale della Sapienza University of Rome “La Sapienza”.

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Scopus, Google Scholar, Web of knowledge : Too much or not too much? ICOLC Autumn 2005 7th European Meeting - Poznan, Po

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  1. Scopus, Google Scholar,Web of knowledge:Too much or not too much?ICOLC Autumn 20057th European Meeting - Poznan, Poland Ezio Tarantino Con la collaborazione con Mary Joan Crowley BIDS – Biblioteca digitale della Sapienza University of Rome “La Sapienza”

  2. University of Rome “La Sapienza” • 1999: BIDS (digital library) is born (10 databases) • 2001: Web of Science

  3. University of Rome “La Sapienza” Usage statistics (2002)

  4. University of Rome “La Sapienza” Usage statistics (2002)

  5. University of Rome “La Sapienza” Usage statistics (2002)

  6. University of Rome “La Sapienza” Usage statistics (2002)

  7. University of Rome “La Sapienza” 2003 WOS

  8. University of Rome “La Sapienza” • How many times has my article been cited? • How many times has that article been cited?

  9. University of Rome “La Sapienza” 2004, July Scopus trial. Pre-release version

  10. University of Rome “La Sapienza” 2004, October Coverage & overlap * source: CSA

  11. University of Rome “La Sapienza” 2004, November Start-up of Google Scholar 2005, January Signed contract with SCOPUS

  12. A quantitative evaluation How many articles? How many citations?

  13. A quantitative evaluation Number of articles WOS: 35.000.000 articlesScopus: 25.000.000Google Scholar ?

  14. A quantitative evaluation Time range WOS: 1990-2003Scopus: 1996-Google Scholar ?

  15. A quantitative evaluation The test 10 articles per discipline (economics, medicine, science, psychology) from international journal, since 1968 until 2003.

  16. A quantitative evaluation The testNumber of positive answers

  17. A quantitative evaluation

  18. A quantitative evaluation The testNumber of citations

  19. A quantitative evaluation

  20. A quantitative evaluation The testNumber of citationsby discipline

  21. A quantitative evaluation

  22. A quantitative evaluation The testAverage citations per article found

  23. A quantitative evaluation

  24. A quantitative evaluation The testArticles by time range

  25. A quantitative evaluation The testArticles found by year

  26. A qualitative evaluation Test #1 Discipline: Psychology Article: Hoffmann, L.W., The Influence of the Family Environment on Personality: Accounting for Sibling Differences, di Hoffman (Psychological Bulletin, 1991) citations: Scopus: 51 (3 not found elsewhere) WOS: 81 (35 not found elsewhere) GS: 33 (4 not found elsewhere)

  27. A qualitative evaluation citations: Scopus: 51 (3 unique) WOS: 81 (35 unique) GS: 33 (4 unique) citations in common WOS-Scopus: 43/51 WOS-GS: 25/33 Scopus-GS: 26/33

  28. A qualitative evaluation citations: Scopus: 51 (3 unique) WOS: 81 (35 unique) GS: 33 (4 unique) citations in common WOS+Scopus: (81+51)-43 = 89 WOS+GS: (81+33)-25 = 89 Scopus+GS: (51+33)-26 = 58

  29. A qualitative evaluation QUESTIONS Advantage or disadvantage? Is it “noise” or more information? Who decides?

  30. A qualitative evaluation

  31. A qualitative evaluation Test #2 Discipline: Economics and finance Article: Frittelli. M.: The minimal Entropy Martingale Measure and the Valuation Problem in Incomplete Markets, (Mathematical finance, 2000) citations: Scopus: 36 WOS: 32 GS: 116

  32. Epstein, L., and S. Zin, 1989, "Substitution, Risk Aversion, and the Temporal Behavior of Consumption and Asset Returns: A Theoretical Framework," Econometrica, 57, 937–969.[ISI] Epstein, L., and S. Zin, 1991, "Substitution, Risk Aversion, and the Temporal Behavior of Consumption and Asset Returns: An Empirical Investigation," Journal of Political Economy, 99, 263–286.[CrossRef][ISI]  article[Frittelli, The minimal Entropy Martingale Measure and the Valuation Problem in Incomplete Markets,]should be here Gilboa, I., and D. Schmeidler, 1989, "Maxmin Expected Utility with Non-unique Prior," Journal of Mathematical Economics, 18, 141–153.[CrossRef][ISI] Hansen, L., and T. Sargent, 1995, "Discounted Linear Exponential Quadratic Gaussian Control," IEEE Transactions on Automatic Control, 40, 968–971.[CrossRef][ISI]

  33. Fritelli, [F 00] M. Fritelli, (2000), The minimal entropy martingale measure and the valuation problem in incomplete markets. Mathematical Finance, Vol. 10, pp. 39{52

  34. A qualitative evaluation Test #3 Article: Buncel, E..: Rationalizing the regioselectivity in polynitroarene anionic σ-adduct formation. Relevance to nucleophilic aromatic substitution(Chemical Reviews 1995 (7), pp. X-2280 ) citations: Scopus: 3 WOS: 65 GS: 15

  35. A qualitative evaluation

  36. A qualitative evaluation

  37. A qualitative evaluation

  38. A qualitative evaluation Test #4 (The ghost article: an international plot) Article:Ryckaert-Ciccotti: Numerical integration of the cartesian equations of motion of a system with constraints: molecular dynamics of n-alkanes. Journal of computation physics, 1977) citations: Scopus: not found WOS: not found GS: cited by 1.276

  39. A qualitative evaluation

  40. A qualitative evaluation

  41. A qualitative evaluation

  42. Conclusion The winner is…. No winner!

  43. Thank you ezio.tarantino@uniroma1.it

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